How Silica Gel Took Over the World

I didn't find this in the article, so:

You can "recharge" silical gel by baking in the oven at 120 C for a couple of hours. If you do, be careful to remove the casing before you do, unless it is heat safe.

I have a small collection of oven safe dessicant packs that I keep on hand for emergency drying electronics.

You can just microwave them too, on low power. It's much, much faster and power efficient.

Also much harder to control. Oven drying has the advantage that you can set the temperature so there's no risk of overheating anything.

is there any harm in overheating silica when drying it out?